./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57a0d461468e871620bb6a0a3de7e8bdfa4741915d12326365887ea97e191d16 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:37:23,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:37:23,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:37:23,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:37:23,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:37:23,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:37:23,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:37:23,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:37:23,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:37:23,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:37:23,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:37:23,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:37:23,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:37:23,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:37:23,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:37:23,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:37:23,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:37:23,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:37:23,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:37:23,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:37:23,134 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:37:23,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:37:23,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:37:23,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:37:23,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:37:23,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:37:23,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:37:23,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:37:23,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:37:23,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:37:23,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:37:23,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:37:23,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:37:23,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:37:23,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:37:23,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:37:23,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:37:23,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:37:23,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:37:23,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:37:23,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:37:23,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:37:23,156 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:37:23,183 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:37:23,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:37:23,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:37:23,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:37:23,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:37:23,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:37:23,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:37:23,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:37:23,186 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:37:23,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:37:23,187 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:37:23,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:37:23,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:37:23,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:37:23,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:37:23,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:37:23,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:37:23,188 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:37:23,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:37:23,188 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:37:23,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:37:23,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:37:23,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:37:23,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:37:23,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:37:23,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:37:23,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:37:23,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:37:23,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:37:23,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:37:23,190 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:37:23,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:37:23,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:37:23,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57a0d461468e871620bb6a0a3de7e8bdfa4741915d12326365887ea97e191d16 [2022-07-12 09:37:23,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:37:23,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:37:23,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:37:23,434 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:37:23,435 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:37:23,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c [2022-07-12 09:37:23,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3df680e67/714ac1921eab47b69edcd88a5cb1fdf2/FLAG0dfda01e3 [2022-07-12 09:37:23,999 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:37:24,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c [2022-07-12 09:37:24,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3df680e67/714ac1921eab47b69edcd88a5cb1fdf2/FLAG0dfda01e3 [2022-07-12 09:37:24,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3df680e67/714ac1921eab47b69edcd88a5cb1fdf2 [2022-07-12 09:37:24,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:37:24,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:37:24,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:37:24,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:37:24,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:37:24,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c984035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24, skipping insertion in model container [2022-07-12 09:37:24,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:37:24,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:37:24,562 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c[911,924] [2022-07-12 09:37:24,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c[8416,8429] [2022-07-12 09:37:24,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:37:24,757 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:37:24,766 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c[911,924] [2022-07-12 09:37:24,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c[8416,8429] [2022-07-12 09:37:24,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:37:24,880 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:37:24,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24 WrapperNode [2022-07-12 09:37:24,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:37:24,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:37:24,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:37:24,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:37:24,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,946 INFO L137 Inliner]: procedures = 79, calls = 97, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 1078 [2022-07-12 09:37:24,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:37:24,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:37:24,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:37:24,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:37:24,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:24,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:25,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:25,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:25,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:37:25,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:37:25,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:37:25,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:37:25,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (1/1) ... [2022-07-12 09:37:25,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:37:25,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:37:25,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:37:25,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:37:25,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:37:25,149 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:37:25,149 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:37:25,149 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-12 09:37:25,150 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-12 09:37:25,151 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:37:25,151 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:37:25,151 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:37:25,151 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:37:25,151 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-12 09:37:25,151 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-12 09:37:25,152 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:37:25,152 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:37:25,152 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:37:25,152 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:37:25,152 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-12 09:37:25,152 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-12 09:37:25,152 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-12 09:37:25,153 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-12 09:37:25,153 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-12 09:37:25,153 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-12 09:37:25,153 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:37:25,153 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:37:25,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:37:25,153 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:37:25,154 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:37:25,154 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-12 09:37:25,154 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-12 09:37:25,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:37:25,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:37:25,154 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:37:25,155 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:37:25,268 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:37:25,270 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:37:26,073 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-12 09:37:26,074 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-12 09:37:26,142 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:37:26,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:37:26,161 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-07-12 09:37:26,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:37:26 BoogieIcfgContainer [2022-07-12 09:37:26,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:37:26,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:37:26,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:37:26,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:37:26,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:37:24" (1/3) ... [2022-07-12 09:37:26,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9eab31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:37:26, skipping insertion in model container [2022-07-12 09:37:26,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:24" (2/3) ... [2022-07-12 09:37:26,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9eab31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:37:26, skipping insertion in model container [2022-07-12 09:37:26,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:37:26" (3/3) ... [2022-07-12 09:37:26,173 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.12.cil-2.c [2022-07-12 09:37:26,184 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:37:26,185 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:37:26,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:37:26,269 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@65ba0238, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2a1e0a29 [2022-07-12 09:37:26,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:37:26,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 499 states, 440 states have (on average 1.6386363636363637) internal successors, (721), 446 states have internal predecessors, (721), 42 states have call successors, (42), 14 states have call predecessors, (42), 14 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-07-12 09:37:26,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:37:26,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:26,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:26,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:26,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:26,305 INFO L85 PathProgramCache]: Analyzing trace with hash -50409674, now seen corresponding path program 1 times [2022-07-12 09:37:26,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:26,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649671649] [2022-07-12 09:37:26,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:26,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:26,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:26,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:26,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:26,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:26,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:37:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:26,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:37:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:26,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:37:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:26,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:26,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649671649] [2022-07-12 09:37:26,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649671649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:26,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:26,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:37:26,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568506322] [2022-07-12 09:37:26,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:26,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:37:26,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:26,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:37:26,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:37:26,624 INFO L87 Difference]: Start difference. First operand has 499 states, 440 states have (on average 1.6386363636363637) internal successors, (721), 446 states have internal predecessors, (721), 42 states have call successors, (42), 14 states have call predecessors, (42), 14 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:37:27,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:27,381 INFO L93 Difference]: Finished difference Result 988 states and 1590 transitions. [2022-07-12 09:37:27,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 09:37:27,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:37:27,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:27,397 INFO L225 Difference]: With dead ends: 988 [2022-07-12 09:37:27,398 INFO L226 Difference]: Without dead ends: 507 [2022-07-12 09:37:27,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:27,406 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 1105 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:27,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1751 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:37:27,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-07-12 09:37:27,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 489. [2022-07-12 09:37:27,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 432 states have (on average 1.5509259259259258) internal successors, (670), 436 states have internal predecessors, (670), 42 states have call successors, (42), 14 states have call predecessors, (42), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-07-12 09:37:27,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 752 transitions. [2022-07-12 09:37:27,481 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 752 transitions. Word has length 65 [2022-07-12 09:37:27,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:27,481 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 752 transitions. [2022-07-12 09:37:27,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:37:27,482 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 752 transitions. [2022-07-12 09:37:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:37:27,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:27,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:27,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:37:27,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:27,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:27,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1437195084, now seen corresponding path program 1 times [2022-07-12 09:37:27,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:27,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97014041] [2022-07-12 09:37:27,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:27,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:37:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:37:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:37:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:27,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:27,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97014041] [2022-07-12 09:37:27,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97014041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:27,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:27,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:37:27,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889417243] [2022-07-12 09:37:27,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:27,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:37:27,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:27,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:37:27,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:37:27,647 INFO L87 Difference]: Start difference. First operand 489 states and 752 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:37:28,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:28,794 INFO L93 Difference]: Finished difference Result 744 states and 1121 transitions. [2022-07-12 09:37:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:37:28,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:37:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:28,799 INFO L225 Difference]: With dead ends: 744 [2022-07-12 09:37:28,799 INFO L226 Difference]: Without dead ends: 640 [2022-07-12 09:37:28,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:37:28,802 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 903 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:28,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 2835 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:37:28,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-07-12 09:37:28,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 601. [2022-07-12 09:37:28,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 522 states have (on average 1.524904214559387) internal successors, (796), 528 states have internal predecessors, (796), 55 states have call successors, (55), 21 states have call predecessors, (55), 22 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-07-12 09:37:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 909 transitions. [2022-07-12 09:37:28,841 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 909 transitions. Word has length 65 [2022-07-12 09:37:28,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:28,842 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 909 transitions. [2022-07-12 09:37:28,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:37:28,842 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 909 transitions. [2022-07-12 09:37:28,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:37:28,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:28,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:28,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:37:28,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:28,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:28,846 INFO L85 PathProgramCache]: Analyzing trace with hash 241693556, now seen corresponding path program 1 times [2022-07-12 09:37:28,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:28,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656127329] [2022-07-12 09:37:28,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:28,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:28,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:28,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:28,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:28,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:28,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:37:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:28,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:37:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:28,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:37:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:28,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:28,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656127329] [2022-07-12 09:37:28,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656127329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:28,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:28,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:37:28,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145601544] [2022-07-12 09:37:28,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:28,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:37:28,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:28,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:37:28,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:37:28,960 INFO L87 Difference]: Start difference. First operand 601 states and 909 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:37:30,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:30,198 INFO L93 Difference]: Finished difference Result 998 states and 1474 transitions. [2022-07-12 09:37:30,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:37:30,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:37:30,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:30,204 INFO L225 Difference]: With dead ends: 998 [2022-07-12 09:37:30,204 INFO L226 Difference]: Without dead ends: 789 [2022-07-12 09:37:30,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-12 09:37:30,206 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1456 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:30,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 2896 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:37:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-07-12 09:37:30,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 713. [2022-07-12 09:37:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 612 states have (on average 1.5049019607843137) internal successors, (921), 620 states have internal predecessors, (921), 68 states have call successors, (68), 28 states have call predecessors, (68), 31 states have return successors, (79), 68 states have call predecessors, (79), 66 states have call successors, (79) [2022-07-12 09:37:30,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1068 transitions. [2022-07-12 09:37:30,245 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1068 transitions. Word has length 65 [2022-07-12 09:37:30,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:30,245 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1068 transitions. [2022-07-12 09:37:30,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:37:30,246 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1068 transitions. [2022-07-12 09:37:30,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:37:30,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:30,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:30,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:37:30,255 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:30,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:30,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1786892554, now seen corresponding path program 1 times [2022-07-12 09:37:30,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:30,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364180446] [2022-07-12 09:37:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:30,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:37:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:37:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:37:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:30,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:30,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364180446] [2022-07-12 09:37:30,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364180446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:30,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:30,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:37:30,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251507407] [2022-07-12 09:37:30,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:30,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:37:30,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:30,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:37:30,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:37:30,407 INFO L87 Difference]: Start difference. First operand 713 states and 1068 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-12 09:37:32,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:32,382 INFO L93 Difference]: Finished difference Result 2259 states and 3265 transitions. [2022-07-12 09:37:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:37:32,388 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-12 09:37:32,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:32,400 INFO L225 Difference]: With dead ends: 2259 [2022-07-12 09:37:32,400 INFO L226 Difference]: Without dead ends: 1926 [2022-07-12 09:37:32,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 09:37:32,411 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 3850 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3868 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 2589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:32,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3868 Valid, 3237 Invalid, 2589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 1920 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 09:37:32,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2022-07-12 09:37:32,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1766. [2022-07-12 09:37:32,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1460 states have (on average 1.4157534246575343) internal successors, (2067), 1483 states have internal predecessors, (2067), 178 states have call successors, (178), 111 states have call predecessors, (178), 126 states have return successors, (212), 174 states have call predecessors, (212), 176 states have call successors, (212) [2022-07-12 09:37:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2457 transitions. [2022-07-12 09:37:32,511 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2457 transitions. Word has length 65 [2022-07-12 09:37:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:32,512 INFO L495 AbstractCegarLoop]: Abstraction has 1766 states and 2457 transitions. [2022-07-12 09:37:32,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-12 09:37:32,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2457 transitions. [2022-07-12 09:37:32,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:37:32,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:32,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:32,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:37:32,514 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:32,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:32,515 INFO L85 PathProgramCache]: Analyzing trace with hash -666149630, now seen corresponding path program 1 times [2022-07-12 09:37:32,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:32,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021700309] [2022-07-12 09:37:32,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:32,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 09:37:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:32,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:32,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:32,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021700309] [2022-07-12 09:37:32,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021700309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:32,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:32,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:37:32,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280984637] [2022-07-12 09:37:32,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:32,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:37:32,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:32,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:37:32,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:37:32,620 INFO L87 Difference]: Start difference. First operand 1766 states and 2457 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:37:33,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:33,723 INFO L93 Difference]: Finished difference Result 3294 states and 4536 transitions. [2022-07-12 09:37:33,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:37:33,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-12 09:37:33,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:33,733 INFO L225 Difference]: With dead ends: 3294 [2022-07-12 09:37:33,733 INFO L226 Difference]: Without dead ends: 1914 [2022-07-12 09:37:33,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:37:33,737 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 992 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:33,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 2939 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:37:33,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2022-07-12 09:37:33,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1806. [2022-07-12 09:37:33,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1492 states have (on average 1.4028150134048258) internal successors, (2093), 1515 states have internal predecessors, (2093), 178 states have call successors, (178), 111 states have call predecessors, (178), 134 states have return successors, (220), 182 states have call predecessors, (220), 176 states have call successors, (220) [2022-07-12 09:37:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2491 transitions. [2022-07-12 09:37:33,809 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2491 transitions. Word has length 66 [2022-07-12 09:37:33,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:33,810 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2491 transitions. [2022-07-12 09:37:33,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:37:33,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2491 transitions. [2022-07-12 09:37:33,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:37:33,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:33,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:33,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:37:33,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:33,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1695508928, now seen corresponding path program 1 times [2022-07-12 09:37:33,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:33,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928328272] [2022-07-12 09:37:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:33,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 09:37:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:33,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:33,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928328272] [2022-07-12 09:37:33,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928328272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:33,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:33,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:37:33,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309366678] [2022-07-12 09:37:33,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:33,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:37:33,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:33,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:37:33,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:37:33,928 INFO L87 Difference]: Start difference. First operand 1806 states and 2491 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:37:35,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:35,885 INFO L93 Difference]: Finished difference Result 5378 states and 7365 transitions. [2022-07-12 09:37:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:37:35,886 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-12 09:37:35,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:35,896 INFO L225 Difference]: With dead ends: 5378 [2022-07-12 09:37:35,897 INFO L226 Difference]: Without dead ends: 2197 [2022-07-12 09:37:35,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 09:37:35,904 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 3913 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3931 SdHoareTripleChecker+Valid, 3280 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:35,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3931 Valid, 3280 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [678 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:37:35,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2022-07-12 09:37:35,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 2017. [2022-07-12 09:37:35,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 1631 states have (on average 1.3605150214592274) internal successors, (2219), 1656 states have internal predecessors, (2219), 218 states have call successors, (218), 139 states have call predecessors, (218), 166 states have return successors, (266), 224 states have call predecessors, (266), 216 states have call successors, (266) [2022-07-12 09:37:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2703 transitions. [2022-07-12 09:37:35,995 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2703 transitions. Word has length 66 [2022-07-12 09:37:35,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:35,996 INFO L495 AbstractCegarLoop]: Abstraction has 2017 states and 2703 transitions. [2022-07-12 09:37:35,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:37:35,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2703 transitions. [2022-07-12 09:37:35,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:37:35,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:35,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:35,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:37:35,998 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:35,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:35,999 INFO L85 PathProgramCache]: Analyzing trace with hash -2019341431, now seen corresponding path program 1 times [2022-07-12 09:37:35,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:35,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396189232] [2022-07-12 09:37:35,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:35,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:37:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:37:36,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:36,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396189232] [2022-07-12 09:37:36,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396189232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:36,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:36,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:37:36,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233507844] [2022-07-12 09:37:36,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:36,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:37:36,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:36,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:37:36,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:37:36,138 INFO L87 Difference]: Start difference. First operand 2017 states and 2703 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:37:37,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:37,309 INFO L93 Difference]: Finished difference Result 3842 states and 5105 transitions. [2022-07-12 09:37:37,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:37:37,310 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-07-12 09:37:37,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:37,322 INFO L225 Difference]: With dead ends: 3842 [2022-07-12 09:37:37,323 INFO L226 Difference]: Without dead ends: 2211 [2022-07-12 09:37:37,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:37:37,328 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 986 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:37,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 2891 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:37:37,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2022-07-12 09:37:37,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 2077. [2022-07-12 09:37:37,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 1679 states have (on average 1.3466349017272186) internal successors, (2261), 1704 states have internal predecessors, (2261), 218 states have call successors, (218), 139 states have call predecessors, (218), 178 states have return successors, (278), 236 states have call predecessors, (278), 216 states have call successors, (278) [2022-07-12 09:37:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2757 transitions. [2022-07-12 09:37:37,448 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2757 transitions. Word has length 91 [2022-07-12 09:37:37,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:37,448 INFO L495 AbstractCegarLoop]: Abstraction has 2077 states and 2757 transitions. [2022-07-12 09:37:37,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:37:37,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2757 transitions. [2022-07-12 09:37:37,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:37:37,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:37,450 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:37,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:37:37,450 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:37,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:37,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1575440757, now seen corresponding path program 1 times [2022-07-12 09:37:37,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:37,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249410753] [2022-07-12 09:37:37,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:37,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:37:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:37:37,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:37,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249410753] [2022-07-12 09:37:37,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249410753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:37,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:37,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:37:37,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496065169] [2022-07-12 09:37:37,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:37,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:37:37,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:37,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:37:37,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:37:37,568 INFO L87 Difference]: Start difference. First operand 2077 states and 2757 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:37:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:38,669 INFO L93 Difference]: Finished difference Result 3604 states and 4721 transitions. [2022-07-12 09:37:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 09:37:38,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-12 09:37:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:38,683 INFO L225 Difference]: With dead ends: 3604 [2022-07-12 09:37:38,683 INFO L226 Difference]: Without dead ends: 2151 [2022-07-12 09:37:38,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-12 09:37:38,688 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 1471 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:38,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 2582 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:37:38,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2022-07-12 09:37:38,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1856. [2022-07-12 09:37:38,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1511 states have (on average 1.3520847121111847) internal successors, (2043), 1531 states have internal predecessors, (2043), 190 states have call successors, (190), 120 states have call predecessors, (190), 153 states have return successors, (238), 206 states have call predecessors, (238), 188 states have call successors, (238) [2022-07-12 09:37:38,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2471 transitions. [2022-07-12 09:37:38,784 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2471 transitions. Word has length 91 [2022-07-12 09:37:38,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:38,784 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2471 transitions. [2022-07-12 09:37:38,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:37:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2471 transitions. [2022-07-12 09:37:38,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:37:38,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:38,786 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:38,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:37:38,786 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:38,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:38,787 INFO L85 PathProgramCache]: Analyzing trace with hash 363721289, now seen corresponding path program 1 times [2022-07-12 09:37:38,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:38,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787677367] [2022-07-12 09:37:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:38,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:37:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:37:38,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:38,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787677367] [2022-07-12 09:37:38,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787677367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:38,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:38,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:38,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271723769] [2022-07-12 09:37:38,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:38,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:38,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:38,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:38,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:38,872 INFO L87 Difference]: Start difference. First operand 1856 states and 2471 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 09:37:39,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:39,204 INFO L93 Difference]: Finished difference Result 3432 states and 4527 transitions. [2022-07-12 09:37:39,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 09:37:39,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-12 09:37:39,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:39,215 INFO L225 Difference]: With dead ends: 3432 [2022-07-12 09:37:39,215 INFO L226 Difference]: Without dead ends: 1963 [2022-07-12 09:37:39,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-07-12 09:37:39,220 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 1324 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:39,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 2020 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:37:39,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2022-07-12 09:37:39,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1856. [2022-07-12 09:37:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1511 states have (on average 1.328259430840503) internal successors, (2007), 1531 states have internal predecessors, (2007), 190 states have call successors, (190), 120 states have call predecessors, (190), 153 states have return successors, (238), 206 states have call predecessors, (238), 188 states have call successors, (238) [2022-07-12 09:37:39,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2435 transitions. [2022-07-12 09:37:39,311 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2435 transitions. Word has length 91 [2022-07-12 09:37:39,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:39,312 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2435 transitions. [2022-07-12 09:37:39,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 09:37:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2435 transitions. [2022-07-12 09:37:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 09:37:39,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:39,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:39,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:37:39,314 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:39,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:39,314 INFO L85 PathProgramCache]: Analyzing trace with hash -128979882, now seen corresponding path program 1 times [2022-07-12 09:37:39,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:39,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282678992] [2022-07-12 09:37:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:39,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:39,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:39,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:39,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:39,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:39,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:39,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:39,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 09:37:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:37:39,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:39,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282678992] [2022-07-12 09:37:39,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282678992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:39,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:39,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:37:39,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81023239] [2022-07-12 09:37:39,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:39,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:37:39,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:39,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:37:39,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:37:39,416 INFO L87 Difference]: Start difference. First operand 1856 states and 2435 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:37:40,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:40,761 INFO L93 Difference]: Finished difference Result 4274 states and 5518 transitions. [2022-07-12 09:37:40,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 09:37:40,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-07-12 09:37:40,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:40,799 INFO L225 Difference]: With dead ends: 4274 [2022-07-12 09:37:40,799 INFO L226 Difference]: Without dead ends: 2654 [2022-07-12 09:37:40,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-12 09:37:40,803 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 2954 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2997 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:40,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2997 Valid, 2304 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:37:40,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2022-07-12 09:37:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2477. [2022-07-12 09:37:40,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 1978 states have (on average 1.288675429726997) internal successors, (2549), 2006 states have internal predecessors, (2549), 267 states have call successors, (267), 168 states have call predecessors, (267), 230 states have return successors, (369), 304 states have call predecessors, (369), 265 states have call successors, (369) [2022-07-12 09:37:40,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3185 transitions. [2022-07-12 09:37:40,902 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3185 transitions. Word has length 92 [2022-07-12 09:37:40,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:40,902 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 3185 transitions. [2022-07-12 09:37:40,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:37:40,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3185 transitions. [2022-07-12 09:37:40,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-12 09:37:40,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:40,905 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:40,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:37:40,905 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:40,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:40,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1304859459, now seen corresponding path program 1 times [2022-07-12 09:37:40,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:40,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008049597] [2022-07-12 09:37:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:40,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 09:37:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:40,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:37:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 09:37:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:37:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:37:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:37:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 09:37:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 09:37:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,018 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-12 09:37:41,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:41,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008049597] [2022-07-12 09:37:41,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008049597] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:37:41,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467802041] [2022-07-12 09:37:41,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:41,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:37:41,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:37:41,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:37:41,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:37:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:37:41,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:37:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 09:37:41,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:37:41,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467802041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:41,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:37:41,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-12 09:37:41,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333787372] [2022-07-12 09:37:41,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:41,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:37:41,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:41,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:37:41,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:41,333 INFO L87 Difference]: Start difference. First operand 2477 states and 3185 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 09:37:41,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:41,510 INFO L93 Difference]: Finished difference Result 6403 states and 8014 transitions. [2022-07-12 09:37:41,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:37:41,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-07-12 09:37:41,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:41,525 INFO L225 Difference]: With dead ends: 6403 [2022-07-12 09:37:41,526 INFO L226 Difference]: Without dead ends: 4389 [2022-07-12 09:37:41,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:41,530 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 61 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:41,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1511 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:37:41,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2022-07-12 09:37:41,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 4347. [2022-07-12 09:37:41,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3435 states have (on average 1.252692867540029) internal successors, (4303), 3486 states have internal predecessors, (4303), 474 states have call successors, (474), 329 states have call predecessors, (474), 436 states have return successors, (637), 533 states have call predecessors, (637), 472 states have call successors, (637) [2022-07-12 09:37:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5414 transitions. [2022-07-12 09:37:41,741 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5414 transitions. Word has length 163 [2022-07-12 09:37:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:41,741 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 5414 transitions. [2022-07-12 09:37:41,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 09:37:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5414 transitions. [2022-07-12 09:37:41,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:37:41,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:41,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:41,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:37:41,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 09:37:41,968 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:41,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:41,968 INFO L85 PathProgramCache]: Analyzing trace with hash 96232972, now seen corresponding path program 1 times [2022-07-12 09:37:41,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:41,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483548699] [2022-07-12 09:37:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:41,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:42,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:42,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:37:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:42,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:37:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:42,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:37:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:42,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:37:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:42,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:42,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483548699] [2022-07-12 09:37:42,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483548699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:42,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:42,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:37:42,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862783920] [2022-07-12 09:37:42,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:42,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:37:42,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:42,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:37:42,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:37:42,122 INFO L87 Difference]: Start difference. First operand 4347 states and 5414 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:37:43,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:43,926 INFO L93 Difference]: Finished difference Result 4860 states and 6246 transitions. [2022-07-12 09:37:43,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:37:43,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:37:43,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:43,944 INFO L225 Difference]: With dead ends: 4860 [2022-07-12 09:37:43,944 INFO L226 Difference]: Without dead ends: 4489 [2022-07-12 09:37:43,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:37:43,947 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 1140 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:43,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 1382 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:37:43,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2022-07-12 09:37:44,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4347. [2022-07-12 09:37:44,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3435 states have (on average 1.252401746724891) internal successors, (4302), 3486 states have internal predecessors, (4302), 474 states have call successors, (474), 329 states have call predecessors, (474), 436 states have return successors, (637), 533 states have call predecessors, (637), 472 states have call successors, (637) [2022-07-12 09:37:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5413 transitions. [2022-07-12 09:37:44,260 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5413 transitions. Word has length 178 [2022-07-12 09:37:44,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:44,261 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 5413 transitions. [2022-07-12 09:37:44,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:37:44,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5413 transitions. [2022-07-12 09:37:44,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:37:44,264 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:44,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:44,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:37:44,264 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:44,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:44,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1599331278, now seen corresponding path program 1 times [2022-07-12 09:37:44,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:44,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166703320] [2022-07-12 09:37:44,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:44,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:44,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:44,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:37:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:44,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:37:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:44,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:37:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:44,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:37:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:44,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:44,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166703320] [2022-07-12 09:37:44,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166703320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:44,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:44,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:37:44,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787082910] [2022-07-12 09:37:44,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:44,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:37:44,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:44,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:37:44,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:37:44,406 INFO L87 Difference]: Start difference. First operand 4347 states and 5413 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:37:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:46,144 INFO L93 Difference]: Finished difference Result 4852 states and 6229 transitions. [2022-07-12 09:37:46,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:37:46,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:37:46,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:46,159 INFO L225 Difference]: With dead ends: 4852 [2022-07-12 09:37:46,159 INFO L226 Difference]: Without dead ends: 4489 [2022-07-12 09:37:46,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:37:46,161 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 1131 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:46,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1380 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:37:46,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2022-07-12 09:37:46,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4347. [2022-07-12 09:37:46,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3435 states have (on average 1.2521106259097525) internal successors, (4301), 3486 states have internal predecessors, (4301), 474 states have call successors, (474), 329 states have call predecessors, (474), 436 states have return successors, (637), 533 states have call predecessors, (637), 472 states have call successors, (637) [2022-07-12 09:37:46,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5412 transitions. [2022-07-12 09:37:46,438 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5412 transitions. Word has length 178 [2022-07-12 09:37:46,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:46,438 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 5412 transitions. [2022-07-12 09:37:46,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:37:46,438 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5412 transitions. [2022-07-12 09:37:46,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:37:46,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:46,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:46,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:37:46,441 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:46,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:46,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1029059472, now seen corresponding path program 1 times [2022-07-12 09:37:46,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:46,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11845211] [2022-07-12 09:37:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:46,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:46,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:46,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:37:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:46,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:37:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:46,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:37:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:46,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:37:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:46,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:46,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11845211] [2022-07-12 09:37:46,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11845211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:46,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:46,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:37:46,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539398819] [2022-07-12 09:37:46,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:46,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:37:46,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:46,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:37:46,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:37:46,601 INFO L87 Difference]: Start difference. First operand 4347 states and 5412 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:37:49,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:49,568 INFO L93 Difference]: Finished difference Result 5363 states and 7059 transitions. [2022-07-12 09:37:49,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:37:49,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:37:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:49,581 INFO L225 Difference]: With dead ends: 5363 [2022-07-12 09:37:49,581 INFO L226 Difference]: Without dead ends: 5006 [2022-07-12 09:37:49,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:49,585 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 1793 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:49,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1824 Valid, 1958 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 09:37:49,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2022-07-12 09:37:49,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 4723. [2022-07-12 09:37:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4723 states, 3783 states have (on average 1.2839016653449644) internal successors, (4857), 3835 states have internal predecessors, (4857), 495 states have call successors, (495), 335 states have call predecessors, (495), 443 states have return successors, (661), 554 states have call predecessors, (661), 493 states have call successors, (661) [2022-07-12 09:37:49,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4723 states to 4723 states and 6013 transitions. [2022-07-12 09:37:49,909 INFO L78 Accepts]: Start accepts. Automaton has 4723 states and 6013 transitions. Word has length 178 [2022-07-12 09:37:49,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:49,909 INFO L495 AbstractCegarLoop]: Abstraction has 4723 states and 6013 transitions. [2022-07-12 09:37:49,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:37:49,910 INFO L276 IsEmpty]: Start isEmpty. Operand 4723 states and 6013 transitions. [2022-07-12 09:37:49,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:37:49,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:49,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:49,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:37:49,912 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:49,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:49,913 INFO L85 PathProgramCache]: Analyzing trace with hash 153074196, now seen corresponding path program 1 times [2022-07-12 09:37:49,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:49,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052285486] [2022-07-12 09:37:49,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:49,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:49,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:50,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:37:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:50,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:37:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:50,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:37:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:50,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:37:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:50,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:50,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:50,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052285486] [2022-07-12 09:37:50,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052285486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:50,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:50,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:50,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792754377] [2022-07-12 09:37:50,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:50,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:50,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:50,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:50,078 INFO L87 Difference]: Start difference. First operand 4723 states and 6013 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:37:53,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:53,598 INFO L93 Difference]: Finished difference Result 6278 states and 8539 transitions. [2022-07-12 09:37:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:37:53,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:37:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:53,619 INFO L225 Difference]: With dead ends: 6278 [2022-07-12 09:37:53,619 INFO L226 Difference]: Without dead ends: 5545 [2022-07-12 09:37:53,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:37:53,624 INFO L413 NwaCegarLoop]: 1133 mSDtfsCounter, 1826 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 3337 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 3460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 3337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:53,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1857 Valid, 3242 Invalid, 3460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 3337 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-12 09:37:53,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5545 states. [2022-07-12 09:37:53,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5545 to 5073. [2022-07-12 09:37:53,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5073 states, 4105 states have (on average 1.3059683313032886) internal successors, (5361), 4158 states have internal predecessors, (5361), 516 states have call successors, (516), 341 states have call predecessors, (516), 450 states have return successors, (684), 576 states have call predecessors, (684), 514 states have call successors, (684) [2022-07-12 09:37:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 6561 transitions. [2022-07-12 09:37:53,983 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 6561 transitions. Word has length 178 [2022-07-12 09:37:53,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:53,983 INFO L495 AbstractCegarLoop]: Abstraction has 5073 states and 6561 transitions. [2022-07-12 09:37:53,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:37:53,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 6561 transitions. [2022-07-12 09:37:53,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:37:53,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:53,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:53,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:37:53,989 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:53,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:53,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1252117482, now seen corresponding path program 1 times [2022-07-12 09:37:53,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:53,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869676319] [2022-07-12 09:37:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:53,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:54,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:54,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:37:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:54,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:37:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:54,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:37:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:54,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:37:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:54,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:54,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869676319] [2022-07-12 09:37:54,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869676319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:54,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:54,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:54,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613816320] [2022-07-12 09:37:54,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:54,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:54,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:54,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:54,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:54,126 INFO L87 Difference]: Start difference. First operand 5073 states and 6561 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:37:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:56,012 INFO L93 Difference]: Finished difference Result 6646 states and 9127 transitions. [2022-07-12 09:37:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:37:56,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:37:56,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:56,032 INFO L225 Difference]: With dead ends: 6646 [2022-07-12 09:37:56,032 INFO L226 Difference]: Without dead ends: 5563 [2022-07-12 09:37:56,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:56,037 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1356 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:56,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 1943 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:37:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2022-07-12 09:37:56,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 5073. [2022-07-12 09:37:56,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5073 states, 4105 states have (on average 1.305237515225335) internal successors, (5358), 4158 states have internal predecessors, (5358), 516 states have call successors, (516), 341 states have call predecessors, (516), 450 states have return successors, (684), 576 states have call predecessors, (684), 514 states have call successors, (684) [2022-07-12 09:37:56,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 6558 transitions. [2022-07-12 09:37:56,398 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 6558 transitions. Word has length 178 [2022-07-12 09:37:56,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:56,399 INFO L495 AbstractCegarLoop]: Abstraction has 5073 states and 6558 transitions. [2022-07-12 09:37:56,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:37:56,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 6558 transitions. [2022-07-12 09:37:56,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:37:56,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:56,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:56,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:37:56,403 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:56,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:56,403 INFO L85 PathProgramCache]: Analyzing trace with hash 642216404, now seen corresponding path program 1 times [2022-07-12 09:37:56,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:56,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718010516] [2022-07-12 09:37:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:56,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:37:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:37:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:37:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:37:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:56,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:56,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718010516] [2022-07-12 09:37:56,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718010516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:56,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:56,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:56,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297731541] [2022-07-12 09:37:56,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:56,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:56,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:56,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:56,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:56,526 INFO L87 Difference]: Start difference. First operand 5073 states and 6558 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:37:58,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:58,392 INFO L93 Difference]: Finished difference Result 6642 states and 9110 transitions. [2022-07-12 09:37:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:37:58,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:37:58,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:58,408 INFO L225 Difference]: With dead ends: 6642 [2022-07-12 09:37:58,409 INFO L226 Difference]: Without dead ends: 5559 [2022-07-12 09:37:58,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:58,415 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 1440 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:58,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1895 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:37:58,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5559 states. [2022-07-12 09:37:58,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5559 to 5073. [2022-07-12 09:37:58,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5073 states, 4105 states have (on average 1.3045066991473813) internal successors, (5355), 4158 states have internal predecessors, (5355), 516 states have call successors, (516), 341 states have call predecessors, (516), 450 states have return successors, (684), 576 states have call predecessors, (684), 514 states have call successors, (684) [2022-07-12 09:37:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 6555 transitions. [2022-07-12 09:37:58,779 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 6555 transitions. Word has length 178 [2022-07-12 09:37:58,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:58,779 INFO L495 AbstractCegarLoop]: Abstraction has 5073 states and 6555 transitions. [2022-07-12 09:37:58,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:37:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 6555 transitions. [2022-07-12 09:37:58,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:37:58,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:58,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:58,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:37:58,783 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:58,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:58,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2088797270, now seen corresponding path program 1 times [2022-07-12 09:37:58,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:58,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382131753] [2022-07-12 09:37:58,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:58,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:58,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:37:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:58,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:37:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:58,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:37:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:58,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:37:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:58,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:58,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382131753] [2022-07-12 09:37:58,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382131753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:58,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:58,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:58,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626838936] [2022-07-12 09:37:58,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:58,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:58,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:58,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:58,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:58,941 INFO L87 Difference]: Start difference. First operand 5073 states and 6555 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:02,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:02,490 INFO L93 Difference]: Finished difference Result 7617 states and 10651 transitions. [2022-07-12 09:38:02,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:38:02,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:38:02,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:02,512 INFO L225 Difference]: With dead ends: 7617 [2022-07-12 09:38:02,512 INFO L226 Difference]: Without dead ends: 6534 [2022-07-12 09:38:02,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:38:02,517 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 1808 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 3279 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 3403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 3279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:02,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1839 Valid, 3223 Invalid, 3403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 3279 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 09:38:02,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6534 states. [2022-07-12 09:38:02,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6534 to 5782. [2022-07-12 09:38:02,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 4758 states have (on average 1.33921815889029) internal successors, (6372), 4813 states have internal predecessors, (6372), 558 states have call successors, (558), 353 states have call predecessors, (558), 464 states have return successors, (734), 620 states have call predecessors, (734), 556 states have call successors, (734) [2022-07-12 09:38:02,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 7664 transitions. [2022-07-12 09:38:02,915 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 7664 transitions. Word has length 178 [2022-07-12 09:38:02,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:02,915 INFO L495 AbstractCegarLoop]: Abstraction has 5782 states and 7664 transitions. [2022-07-12 09:38:02,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:02,915 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 7664 transitions. [2022-07-12 09:38:02,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:38:02,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:02,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:02,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:38:02,920 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:02,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:02,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1165629844, now seen corresponding path program 1 times [2022-07-12 09:38:02,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:02,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662575672] [2022-07-12 09:38:02,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:02,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:02,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:38:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:38:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:03,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:38:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:03,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:38:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:03,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:03,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662575672] [2022-07-12 09:38:03,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662575672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:03,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:03,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:03,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763848801] [2022-07-12 09:38:03,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:03,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:03,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:03,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:03,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:03,054 INFO L87 Difference]: Start difference. First operand 5782 states and 7664 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:05,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:05,205 INFO L93 Difference]: Finished difference Result 8314 states and 11749 transitions. [2022-07-12 09:38:05,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:38:05,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:38:05,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:05,226 INFO L225 Difference]: With dead ends: 8314 [2022-07-12 09:38:05,226 INFO L226 Difference]: Without dead ends: 6522 [2022-07-12 09:38:05,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:38:05,231 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 1353 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:05,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 1932 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 09:38:05,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6522 states. [2022-07-12 09:38:05,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6522 to 5782. [2022-07-12 09:38:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 4758 states have (on average 1.3381672971836907) internal successors, (6367), 4813 states have internal predecessors, (6367), 558 states have call successors, (558), 353 states have call predecessors, (558), 464 states have return successors, (734), 620 states have call predecessors, (734), 556 states have call successors, (734) [2022-07-12 09:38:05,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 7659 transitions. [2022-07-12 09:38:05,634 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 7659 transitions. Word has length 178 [2022-07-12 09:38:05,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:05,634 INFO L495 AbstractCegarLoop]: Abstraction has 5782 states and 7659 transitions. [2022-07-12 09:38:05,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:05,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 7659 transitions. [2022-07-12 09:38:05,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:38:05,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:05,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:05,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:38:05,639 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:05,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:05,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1551492246, now seen corresponding path program 1 times [2022-07-12 09:38:05,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:05,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050991233] [2022-07-12 09:38:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:05,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:05,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:05,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:38:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:05,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:38:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:05,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:38:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:05,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:38:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:05,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:05,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050991233] [2022-07-12 09:38:05,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050991233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:05,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:05,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:05,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854940592] [2022-07-12 09:38:05,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:05,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:05,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:05,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:05,771 INFO L87 Difference]: Start difference. First operand 5782 states and 7659 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:09,251 INFO L93 Difference]: Finished difference Result 10210 states and 14728 transitions. [2022-07-12 09:38:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:38:09,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:38:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:09,275 INFO L225 Difference]: With dead ends: 10210 [2022-07-12 09:38:09,275 INFO L226 Difference]: Without dead ends: 8418 [2022-07-12 09:38:09,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:38:09,283 INFO L413 NwaCegarLoop]: 1103 mSDtfsCounter, 1800 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 3252 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 3376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 3252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:09,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 3212 Invalid, 3376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 3252 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:38:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8418 states. [2022-07-12 09:38:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8418 to 7204. [2022-07-12 09:38:09,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7204 states, 6068 states have (on average 1.3841463414634145) internal successors, (8399), 6127 states have internal predecessors, (8399), 642 states have call successors, (642), 377 states have call predecessors, (642), 492 states have return successors, (840), 708 states have call predecessors, (840), 640 states have call successors, (840) [2022-07-12 09:38:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7204 states to 7204 states and 9881 transitions. [2022-07-12 09:38:09,892 INFO L78 Accepts]: Start accepts. Automaton has 7204 states and 9881 transitions. Word has length 178 [2022-07-12 09:38:09,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:09,892 INFO L495 AbstractCegarLoop]: Abstraction has 7204 states and 9881 transitions. [2022-07-12 09:38:09,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:09,893 INFO L276 IsEmpty]: Start isEmpty. Operand 7204 states and 9881 transitions. [2022-07-12 09:38:09,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:38:09,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:09,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:09,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:38:09,898 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:09,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:09,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1286844756, now seen corresponding path program 1 times [2022-07-12 09:38:09,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:09,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78779283] [2022-07-12 09:38:09,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:09,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:09,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:09,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:38:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:10,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:38:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:10,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:38:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:10,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:38:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:10,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:10,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78779283] [2022-07-12 09:38:10,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78779283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:10,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:10,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:10,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958794686] [2022-07-12 09:38:10,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:10,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:10,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:10,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:10,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:10,038 INFO L87 Difference]: Start difference. First operand 7204 states and 9881 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:12,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:12,091 INFO L93 Difference]: Finished difference Result 11654 states and 17020 transitions. [2022-07-12 09:38:12,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:38:12,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:38:12,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:12,119 INFO L225 Difference]: With dead ends: 11654 [2022-07-12 09:38:12,119 INFO L226 Difference]: Without dead ends: 8440 [2022-07-12 09:38:12,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:38:12,130 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 1354 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:12,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 1923 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:38:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8440 states. [2022-07-12 09:38:12,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8440 to 7204. [2022-07-12 09:38:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7204 states, 6068 states have (on average 1.3826631509558338) internal successors, (8390), 6127 states have internal predecessors, (8390), 642 states have call successors, (642), 377 states have call predecessors, (642), 492 states have return successors, (840), 708 states have call predecessors, (840), 640 states have call successors, (840) [2022-07-12 09:38:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7204 states to 7204 states and 9872 transitions. [2022-07-12 09:38:12,816 INFO L78 Accepts]: Start accepts. Automaton has 7204 states and 9872 transitions. Word has length 178 [2022-07-12 09:38:12,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:12,817 INFO L495 AbstractCegarLoop]: Abstraction has 7204 states and 9872 transitions. [2022-07-12 09:38:12,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:12,817 INFO L276 IsEmpty]: Start isEmpty. Operand 7204 states and 9872 transitions. [2022-07-12 09:38:12,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:38:12,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:12,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:12,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:38:12,823 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:12,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1076996906, now seen corresponding path program 1 times [2022-07-12 09:38:12,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:12,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121640887] [2022-07-12 09:38:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:12,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:12,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:38:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:12,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:38:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:12,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:38:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:12,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:38:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:12,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:12,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121640887] [2022-07-12 09:38:12,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121640887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:12,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:12,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:12,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108219869] [2022-07-12 09:38:12,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:12,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:12,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:12,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:12,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:12,949 INFO L87 Difference]: Start difference. First operand 7204 states and 9872 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:14,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:14,809 INFO L93 Difference]: Finished difference Result 11634 states and 16953 transitions. [2022-07-12 09:38:14,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:38:14,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:38:14,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:14,831 INFO L225 Difference]: With dead ends: 11634 [2022-07-12 09:38:14,832 INFO L226 Difference]: Without dead ends: 8420 [2022-07-12 09:38:14,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:38:14,840 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 1572 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:14,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 1664 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:38:14,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8420 states. [2022-07-12 09:38:15,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8420 to 7204. [2022-07-12 09:38:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7204 states, 6068 states have (on average 1.381179960448253) internal successors, (8381), 6127 states have internal predecessors, (8381), 642 states have call successors, (642), 377 states have call predecessors, (642), 492 states have return successors, (840), 708 states have call predecessors, (840), 640 states have call successors, (840) [2022-07-12 09:38:15,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7204 states to 7204 states and 9863 transitions. [2022-07-12 09:38:15,405 INFO L78 Accepts]: Start accepts. Automaton has 7204 states and 9863 transitions. Word has length 178 [2022-07-12 09:38:15,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:15,405 INFO L495 AbstractCegarLoop]: Abstraction has 7204 states and 9863 transitions. [2022-07-12 09:38:15,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:15,405 INFO L276 IsEmpty]: Start isEmpty. Operand 7204 states and 9863 transitions. [2022-07-12 09:38:15,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:38:15,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:15,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:15,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:38:15,410 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:15,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:15,410 INFO L85 PathProgramCache]: Analyzing trace with hash 819982552, now seen corresponding path program 1 times [2022-07-12 09:38:15,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:15,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627971265] [2022-07-12 09:38:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:15,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:15,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:38:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:15,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:38:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:15,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:38:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:15,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:38:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:15,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:15,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627971265] [2022-07-12 09:38:15,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627971265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:15,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:15,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:15,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876132673] [2022-07-12 09:38:15,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:15,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:15,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:15,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:15,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:15,542 INFO L87 Difference]: Start difference. First operand 7204 states and 9863 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:17,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:17,716 INFO L93 Difference]: Finished difference Result 11624 states and 16906 transitions. [2022-07-12 09:38:17,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:38:17,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:38:17,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:17,733 INFO L225 Difference]: With dead ends: 11624 [2022-07-12 09:38:17,734 INFO L226 Difference]: Without dead ends: 8410 [2022-07-12 09:38:17,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:38:17,743 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 1349 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:17,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 1913 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:38:17,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8410 states. [2022-07-12 09:38:18,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8410 to 7204. [2022-07-12 09:38:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7204 states, 6068 states have (on average 1.3796967699406724) internal successors, (8372), 6127 states have internal predecessors, (8372), 642 states have call successors, (642), 377 states have call predecessors, (642), 492 states have return successors, (840), 708 states have call predecessors, (840), 640 states have call successors, (840) [2022-07-12 09:38:18,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7204 states to 7204 states and 9854 transitions. [2022-07-12 09:38:18,322 INFO L78 Accepts]: Start accepts. Automaton has 7204 states and 9854 transitions. Word has length 178 [2022-07-12 09:38:18,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:18,323 INFO L495 AbstractCegarLoop]: Abstraction has 7204 states and 9854 transitions. [2022-07-12 09:38:18,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:18,323 INFO L276 IsEmpty]: Start isEmpty. Operand 7204 states and 9854 transitions. [2022-07-12 09:38:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:38:18,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:18,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:18,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:38:18,327 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:18,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:18,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1158270102, now seen corresponding path program 1 times [2022-07-12 09:38:18,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:18,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67823832] [2022-07-12 09:38:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:18,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:18,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:18,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:38:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:18,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:38:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:18,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:38:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:18,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:38:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:18,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:18,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:18,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67823832] [2022-07-12 09:38:18,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67823832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:18,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:18,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:18,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989222154] [2022-07-12 09:38:18,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:18,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:18,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:18,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:18,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:18,451 INFO L87 Difference]: Start difference. First operand 7204 states and 9854 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:22,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:22,179 INFO L93 Difference]: Finished difference Result 15366 states and 22732 transitions. [2022-07-12 09:38:22,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:38:22,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:38:22,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:22,202 INFO L225 Difference]: With dead ends: 15366 [2022-07-12 09:38:22,203 INFO L226 Difference]: Without dead ends: 12152 [2022-07-12 09:38:22,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:38:22,212 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 1864 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 3038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:22,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 2293 Invalid, 3038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2869 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 09:38:22,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12152 states. [2022-07-12 09:38:23,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12152 to 10089. [2022-07-12 09:38:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10089 states, 8729 states have (on average 1.428113185931951) internal successors, (12466), 8796 states have internal predecessors, (12466), 810 states have call successors, (810), 425 states have call predecessors, (810), 548 states have return successors, (1070), 884 states have call predecessors, (1070), 808 states have call successors, (1070) [2022-07-12 09:38:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10089 states to 10089 states and 14346 transitions. [2022-07-12 09:38:23,120 INFO L78 Accepts]: Start accepts. Automaton has 10089 states and 14346 transitions. Word has length 178 [2022-07-12 09:38:23,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:23,121 INFO L495 AbstractCegarLoop]: Abstraction has 10089 states and 14346 transitions. [2022-07-12 09:38:23,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:23,121 INFO L276 IsEmpty]: Start isEmpty. Operand 10089 states and 14346 transitions. [2022-07-12 09:38:23,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:38:23,126 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:23,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:23,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 09:38:23,126 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:23,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:23,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1584824600, now seen corresponding path program 1 times [2022-07-12 09:38:23,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:23,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784471253] [2022-07-12 09:38:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:23,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:23,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:23,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:38:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:23,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:38:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:38:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:23,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:38:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:23,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:23,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784471253] [2022-07-12 09:38:23,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784471253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:23,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:23,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:23,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836899812] [2022-07-12 09:38:23,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:23,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:23,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:23,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:23,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:23,243 INFO L87 Difference]: Start difference. First operand 10089 states and 14346 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:25,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:25,555 INFO L93 Difference]: Finished difference Result 18310 states and 27413 transitions. [2022-07-12 09:38:25,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:38:25,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:38:25,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:25,590 INFO L225 Difference]: With dead ends: 18310 [2022-07-12 09:38:25,590 INFO L226 Difference]: Without dead ends: 12211 [2022-07-12 09:38:25,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:38:25,608 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 1567 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:25,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1599 Valid, 1651 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:38:25,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12211 states. [2022-07-12 09:38:26,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12211 to 10089. [2022-07-12 09:38:26,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10089 states, 8729 states have (on average 1.4261656547141712) internal successors, (12449), 8796 states have internal predecessors, (12449), 810 states have call successors, (810), 425 states have call predecessors, (810), 548 states have return successors, (1070), 884 states have call predecessors, (1070), 808 states have call successors, (1070) [2022-07-12 09:38:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10089 states to 10089 states and 14329 transitions. [2022-07-12 09:38:26,470 INFO L78 Accepts]: Start accepts. Automaton has 10089 states and 14329 transitions. Word has length 178 [2022-07-12 09:38:26,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:26,470 INFO L495 AbstractCegarLoop]: Abstraction has 10089 states and 14329 transitions. [2022-07-12 09:38:26,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:26,470 INFO L276 IsEmpty]: Start isEmpty. Operand 10089 states and 14329 transitions. [2022-07-12 09:38:26,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:38:26,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:26,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:26,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 09:38:26,475 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:26,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:26,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1044395094, now seen corresponding path program 1 times [2022-07-12 09:38:26,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:26,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267009435] [2022-07-12 09:38:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:26,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:26,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:38:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:26,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:38:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:38:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:26,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:38:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:26,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:26,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267009435] [2022-07-12 09:38:26,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267009435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:26,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:26,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:26,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187307693] [2022-07-12 09:38:26,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:26,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:26,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:26,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:26,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:26,596 INFO L87 Difference]: Start difference. First operand 10089 states and 14329 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:32,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:32,338 INFO L93 Difference]: Finished difference Result 28383 states and 43048 transitions. [2022-07-12 09:38:32,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:38:32,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:38:32,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:32,395 INFO L225 Difference]: With dead ends: 28383 [2022-07-12 09:38:32,395 INFO L226 Difference]: Without dead ends: 22284 [2022-07-12 09:38:32,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:38:32,411 INFO L413 NwaCegarLoop]: 1060 mSDtfsCounter, 2215 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 3139 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2259 SdHoareTripleChecker+Valid, 3158 SdHoareTripleChecker+Invalid, 3271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 3139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:32,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2259 Valid, 3158 Invalid, 3271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 3139 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:38:32,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22284 states. [2022-07-12 09:38:33,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22284 to 15755. [2022-07-12 09:38:33,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15755 states, 13963 states have (on average 1.4670915992265272) internal successors, (20485), 14046 states have internal predecessors, (20485), 1130 states have call successors, (1130), 521 states have call predecessors, (1130), 660 states have return successors, (1568), 1220 states have call predecessors, (1568), 1128 states have call successors, (1568) [2022-07-12 09:38:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15755 states to 15755 states and 23183 transitions. [2022-07-12 09:38:33,952 INFO L78 Accepts]: Start accepts. Automaton has 15755 states and 23183 transitions. Word has length 178 [2022-07-12 09:38:33,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:33,952 INFO L495 AbstractCegarLoop]: Abstraction has 15755 states and 23183 transitions. [2022-07-12 09:38:33,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:33,953 INFO L276 IsEmpty]: Start isEmpty. Operand 15755 states and 23183 transitions. [2022-07-12 09:38:33,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:38:33,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:33,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:33,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 09:38:33,959 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:33,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:33,960 INFO L85 PathProgramCache]: Analyzing trace with hash 888414552, now seen corresponding path program 1 times [2022-07-12 09:38:33,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:33,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836251411] [2022-07-12 09:38:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:33,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:33,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:34,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:38:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:34,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:38:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:34,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:38:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:34,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:38:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:34,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:34,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836251411] [2022-07-12 09:38:34,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836251411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:34,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:34,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:34,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690363804] [2022-07-12 09:38:34,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:34,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:34,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:34,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:34,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:34,082 INFO L87 Difference]: Start difference. First operand 15755 states and 23183 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:42,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:42,761 INFO L93 Difference]: Finished difference Result 51007 states and 78672 transitions. [2022-07-12 09:38:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:38:42,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:38:42,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:42,841 INFO L225 Difference]: With dead ends: 51007 [2022-07-12 09:38:42,841 INFO L226 Difference]: Without dead ends: 39242 [2022-07-12 09:38:42,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:38:42,873 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 1871 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 3646 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 3775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:42,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 3329 Invalid, 3775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3646 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 09:38:42,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39242 states. [2022-07-12 09:38:45,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39242 to 27148. [2022-07-12 09:38:45,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27148 states, 24508 states have (on average 1.497266198792231) internal successors, (36695), 24623 states have internal predecessors, (36695), 1754 states have call successors, (1754), 713 states have call predecessors, (1754), 884 states have return successors, (2710), 1876 states have call predecessors, (2710), 1752 states have call successors, (2710) [2022-07-12 09:38:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27148 states to 27148 states and 41159 transitions. [2022-07-12 09:38:45,919 INFO L78 Accepts]: Start accepts. Automaton has 27148 states and 41159 transitions. Word has length 178 [2022-07-12 09:38:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:45,920 INFO L495 AbstractCegarLoop]: Abstraction has 27148 states and 41159 transitions. [2022-07-12 09:38:45,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:45,920 INFO L276 IsEmpty]: Start isEmpty. Operand 27148 states and 41159 transitions. [2022-07-12 09:38:45,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:38:45,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:45,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:45,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 09:38:45,929 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:45,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1299024918, now seen corresponding path program 1 times [2022-07-12 09:38:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:45,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650747625] [2022-07-12 09:38:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:45,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:45,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:46,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:38:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:46,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:38:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:46,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:38:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:46,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:38:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:46,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:46,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650747625] [2022-07-12 09:38:46,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650747625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:46,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:46,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:46,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69502287] [2022-07-12 09:38:46,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:46,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:46,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:46,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:46,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:46,064 INFO L87 Difference]: Start difference. First operand 27148 states and 41159 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:52,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:52,045 INFO L93 Difference]: Finished difference Result 57718 states and 90170 transitions. [2022-07-12 09:38:52,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:38:52,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:38:52,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:52,218 INFO L225 Difference]: With dead ends: 57718 [2022-07-12 09:38:52,218 INFO L226 Difference]: Without dead ends: 34560 [2022-07-12 09:38:52,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:38:52,251 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 1348 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:52,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 1892 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:38:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34560 states. [2022-07-12 09:38:55,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34560 to 27148. [2022-07-12 09:38:55,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27148 states, 24508 states have (on average 1.4946140035906643) internal successors, (36630), 24623 states have internal predecessors, (36630), 1754 states have call successors, (1754), 713 states have call predecessors, (1754), 884 states have return successors, (2710), 1876 states have call predecessors, (2710), 1752 states have call successors, (2710) [2022-07-12 09:38:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27148 states to 27148 states and 41094 transitions. [2022-07-12 09:38:55,218 INFO L78 Accepts]: Start accepts. Automaton has 27148 states and 41094 transitions. Word has length 178 [2022-07-12 09:38:55,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:55,219 INFO L495 AbstractCegarLoop]: Abstraction has 27148 states and 41094 transitions. [2022-07-12 09:38:55,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:38:55,219 INFO L276 IsEmpty]: Start isEmpty. Operand 27148 states and 41094 transitions. [2022-07-12 09:38:55,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:38:55,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:55,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:55,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 09:38:55,229 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:55,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:55,229 INFO L85 PathProgramCache]: Analyzing trace with hash -488844904, now seen corresponding path program 1 times [2022-07-12 09:38:55,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:55,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116869433] [2022-07-12 09:38:55,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:55,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:55,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:55,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:38:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:55,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:38:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:38:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:38:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:55,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:55,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116869433] [2022-07-12 09:38:55,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116869433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:55,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:55,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:55,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935072696] [2022-07-12 09:38:55,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:55,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:55,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:55,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:55,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:55,368 INFO L87 Difference]: Start difference. First operand 27148 states and 41094 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:39:09,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:39:09,638 INFO L93 Difference]: Finished difference Result 93946 states and 146826 transitions. [2022-07-12 09:39:09,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:39:09,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:39:09,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:39:09,831 INFO L225 Difference]: With dead ends: 93946 [2022-07-12 09:39:09,831 INFO L226 Difference]: Without dead ends: 70788 [2022-07-12 09:39:09,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:39:09,896 INFO L413 NwaCegarLoop]: 1163 mSDtfsCounter, 1832 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 3501 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 3501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:39:09,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1862 Valid, 3264 Invalid, 3633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 3501 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 09:39:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70788 states. [2022-07-12 09:39:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70788 to 50031. [2022-07-12 09:39:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50031 states, 45727 states have (on average 1.5135915323550637) internal successors, (69212), 45906 states have internal predecessors, (69212), 2970 states have call successors, (2970), 1097 states have call predecessors, (2970), 1332 states have return successors, (5448), 3156 states have call predecessors, (5448), 2968 states have call successors, (5448) [2022-07-12 09:39:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50031 states to 50031 states and 77630 transitions. [2022-07-12 09:39:15,856 INFO L78 Accepts]: Start accepts. Automaton has 50031 states and 77630 transitions. Word has length 178 [2022-07-12 09:39:15,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:39:15,857 INFO L495 AbstractCegarLoop]: Abstraction has 50031 states and 77630 transitions. [2022-07-12 09:39:15,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:39:15,857 INFO L276 IsEmpty]: Start isEmpty. Operand 50031 states and 77630 transitions. [2022-07-12 09:39:15,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 09:39:15,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:39:15,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:39:15,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 09:39:15,874 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:39:15,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:39:15,875 INFO L85 PathProgramCache]: Analyzing trace with hash -419197030, now seen corresponding path program 1 times [2022-07-12 09:39:15,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:39:15,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043235931] [2022-07-12 09:39:15,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:39:15,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:39:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:15,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:39:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:39:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:15,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:39:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:15,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:39:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:16,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:39:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:39:16,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:39:16,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043235931] [2022-07-12 09:39:16,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043235931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:39:16,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:39:16,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:39:16,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435818681] [2022-07-12 09:39:16,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:39:16,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:39:16,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:39:16,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:39:16,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:39:16,004 INFO L87 Difference]: Start difference. First operand 50031 states and 77630 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:39:40,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:39:40,625 INFO L93 Difference]: Finished difference Result 180699 states and 286548 transitions. [2022-07-12 09:39:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:39:40,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-12 09:39:40,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:39:41,205 INFO L225 Difference]: With dead ends: 180699 [2022-07-12 09:39:41,205 INFO L226 Difference]: Without dead ends: 134658 [2022-07-12 09:39:41,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:39:41,311 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 2010 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 3084 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2054 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 3219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 3084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:39:41,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2054 Valid, 3135 Invalid, 3219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 3084 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 09:39:41,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134658 states.